GearBest offers the Superlux HD681 Headphones in Black/Red for $17.43 with free shipping. That's $15 under last month's mention of a white pair and the lowest total price we could find by $13. These semi-open headphones feature 50mm neodymium drivers, 32 ohm impedance, detachable cable, and 10Hz to 30kHz frequency response.

Note: This item ships from mainland China and may take three to four weeks to arrive.